from django_redis import get_redis_connection
from rest_framework import serializers

from oauth.models import OAuthQQUser
from oauth.utils import check_save_token
from users.models import User


class QQAuthUserSerializer(serializers.Serializer):


    access_token = serializers.CharField(label='操作凭证')

    mobile = serializers.RegexField(label='手机号',regex=r'^1[3-9]\d{9}$')

    password = serializers.CharField(label='密码',max_length=20,min_length=8)
    sms_code = serializers.CharField(label='短信验证码')

    def validate(self,data):

        access_token = data['access_token']

        openid = check_save_token(access_token)

        if not openid:

            raise serializers.ValidationError('无效的access_token')

        data['openid'] = openid

        mobile = data['mobile']
        sms_code = data['sms_code']

        redis_conn = get_redis_connection('code')

        real_sms_code = redis_conn.get('sms_%s'%mobile)


        if real_sms_code.decode() != sms_code:
            raise serializers.ValidationError('短信验证码错误')
        try:
            user = User.objects.get(mobile=mobile)
        except User.DoesNotExist:
            pass
        else:
            password = data['password']

            if not user.check_password(password):
                raise serializers.ValidationError('密码错误')

            data['user'] = user
        return data

    def create(self, validated_data):

        user = validated_data.get('user')

        if not user:

            user = User.objects.create_user(
                username=validated_data['mobbile'],
                password = validated_data['password'],
                mobile = validated_data['mobile']
            )

        OAuthQQUser.objects.create(
            openid = validated_data['openid'],
            user=user
        )

        return user